<div class="border">
  <p>Greet Component</p>
  <div style="border: 1px solid #666;margin: 4px;">
    <div style="border: 1px solid red;margin: 5px;">
      <ng-content select="header"></ng-content>
    </div>
    <div style="border: 1px solid green;margin: 5px;">
      <ng-content select=".card_body"></ng-content>
    </div>
    <div style="border: 1px solid blue;margin: 5px;">
      <ng-content select="footer"></ng-content>
    </div>
  </div>
</div>
